Can't help you about Charleston, but can tell you that NO Celebrity or RCL ship has laundry facilities. We recently returned from a 14 day ccruise on the new Celebrity Constellation in the Baltic's, with another day coming and going. We also had to figure for temperature variations which didn't turn out to be a factor. I can tell you this with packing, as we just went out and bought several additional sets of underwear. WATCH OUT for the weight of your bags, 70 pounds max. 1 was over by 3 pounds, and one was almost 20 pounds under. They would not let us average, and we had to change things over on the floor at the counter. Size is VERY important. A large suitcase on wheels will be OK for size LxWxH. If you open up the expansion, it will not meet the new requirements, and you'll be charged serious money. 2 garment bags and 2 suitcases should be more than sufficient for you, then have fun washing when you get home. Happy sailing! [img]/infopop/emoticons/icon_cool.gif[/img]